Finding the Fourth Proportional to 1,200.36, 1,656.50 and 676.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200.36 : 1,656.50 = 676.40 : x
2. Step 2: Convert to fraction form
   1,200.36/1,656.50 = 676.40/x
3. Step 3: Cross multiply
   1,200.36x = 1,656.50 × 676.40
4. Step 4: Simplify right side
   1,200.36x = 1,120,444.94
5. Step 5: Solve for x
   x = 1,120,444.94/1,200.36
6. Step 6: Final answer
   x = 933.42